Re: [Bluez-users] Mysterious problem with l2test on Coldfire 5282

[Marcel Holtmann <marcel@holtmann.org>]

Hi Jeff,

> Using the l2test program on Motorola 5282 (uClinux) I have a strange behaviour 
> when using l2test -s from the Moto board.  Using the -d (dump) mode to 
> receive packets from a PC running l2test I see what appears to be the packet 
> sequence number in the first 4 bytes of data (little endian), followed by a 2 
> byte packet length, then data payload.  When dumping data from the PC the 
> packet sequence number increments by 1 each time, which, I believe, is the 
> expected behaviour.  However, when sending from the Moto board to the PC, the 
> packet sequence number increments by 4 each time. ?????  L2test send looks 
> ok, the sequence number is just seq++; so something must be going on in hcid, 
> right?  Or maybe it's dropping 3 out of 4 send packets for some reason.  
> Maybe something cocked up with the socket ops in l2test?  ?????  Debugging 
> pointers, please...

maybe this code in send_mode() is the problem

	*(uint32_t *) buf = htobl(seq++);
	*(uint16_t *)(buf+4) = htobs(data_size);

Replace it with

	*(uint32_t *) buf = htobl(seq);
	*(uint16_t *)(buf+4) = htobs(data_size);
	seq++;

I am not a uClinux or compiler expert, so this is only guess.

Regards

Marcel




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